Johann friedrich cristand



(No Model.)

J, P. GRISTAND. SPARK GATGHER.

10.519,886. Patented May 15,189.4.

` wznfsses: f Invenr: l@ Aira?, @.NJGML b, which is preferably fiat, is secured to the UNITED STATES PATENT OFFICE.

SPARK-CATcHl-:R-

SPECIFICATION forming part of Letters Application illed October 3,1893.

To all whom t may concern;

Be it known that I, JOHANN FRIEDRICH CRISTAND, of the Royal Railway Rolling- Stock Works, of Aix-la-Chapelle, in the Kingdom of Prussia and German Empire, have invented a new and useful Spark-Catcher, of which the following is a speeication, reference being had therein to the accompanying drawings.

This invention relates to spark catchers for use in locomotive, traction, and similar engines.

Aspark catcherconstructed toembodythese improvements consists essentially of a number of perforated plates combined with or arranged around a perforated hollow cone or funnel. The plates may be of any suitable shape either fiat or curved or dished, and any convenient number may be employed but three will be found most generally useful.

The accompanying drawings illustrate the improved spark catcher applied to the smoke stack of a locomotive or similar engine.

Figure l illustrates a section of part of the smoke box and the lower part of the smoke stack cutting vertically through the catcher. Fig. 2 is a plan of part of one of the perforated plates. Fig. 3 shows how the perforated plates may be attached to the framing or casing of the smoke box.

As shown in the drawings the spark catcher consists of a perforated vertical tube or funnel a, and a series of radially extending perforated flat or curved plates b, c and d. The lower end of the funnel fits over the nozzle l of the exhaust pipe and rests upon a shoulder provided upon said nozzle. The upper plate upper part of the funnel a by brackets h h and has its edges loosely held in a recess at the base of the smoke stack, thus steadying the funnel, and allowingfor the expansion of the plate b. The plate c which is preferably curved downwardly is secured to the central part of the funnel a by brackets g, and the Patent No. 519,886, dated May 15, 1894.

Serial No. 487,104. (No model.)

plate cl which is preferably also curved downwardly is secured to the funnel a by brackets fat a point below the plane of the discharge opening of the nozzle Z, and the outer portions of this plate d are connected by bolts 'or stays it' with the casing 7e of the smoke box. The intermediate plate c is also stayed by bolts or staysjj which connect it to the bolt on plate d. These connections also serve to hold the funnel a rigidly in position. The bottom plate d must not be brought right up to the door of the smoke box nor to the tube plate but a space must be left sufficient to allow any cinders or ashes which fall on the upper side of said plate to escape.

What I claim, and desire to secure by Letters Patent, is t l. In a locomotive smoke box the combination with the exhaust nozzle, of a perforated funnel supported on said nozzle, a plurality of perforated plates secured centrally to said nozzle and projecting from the same on all sides, a connection from one of said plates to a portion of the lire box, and a connection from said plate te the next adjacent plate, said connections being at a distance from the funnel, substantially as described.

' 2. In a locomotive fire box, the combination with the exhaust nozzle, of a perforated funnel supported 011 said nozzle, a bottom perforated plate secured to said funnel below the plane of the discharge opening of said nozzle, said bottom plate being also connected to the smoke box, a middle perforated plate secured to the funnel and to said bottom plate and a top perforated plate secured to said funnel and having a bearing in a recess formed at the base of the smoke stack, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two witnesses.

JOHANN FRIEDRICH CRISTAND. Witnesses:

FRANZ SELL, H. OIISE. 

